Book,  Part, Title, Chapter, Can.

 1   1,   0,    3,   0, 31  |          a law, or which urge the observance of laws. §2 The provisions
 2   1,   0,    3,   0, 32  |           application or urge the observance of laws, bind those who
 3   1,   0,    4,   2, 49  |   especially in order to urge the observance of a law. ~
 4   2,   1,    3,   3, 277 |          to pass judgement on the observance of the obligation in particular
 5   2,   2,    1,   2, 392 |      Church, and so press for the observance of all ecclesiastical laws. ~§
 6   2,   3,    2,   1, 611 |       sacred ministries, with due observance of the law. ~
 7   2,   3,    0,   0, 731 | perfection of charity through the observance of the constitutions. ~§
 8   4,   1,    7,   7, 1132|        local Ordinary if from its observance a threat arises of grave
 9   4,   1,    7,   9, 1148|          the legal form, with due observance, if need be, of the provisions
10   7,   2,    4,   4, 1580|        equitable manner, with due observance of particular law. ~
11   7,   2,    5,   1, 1592|           its execution, with due observance of the proper norms. ~§2